INITGROUPS (3)
initialize the supplementary group access list
SYNOPSIS
#include <grp.h>
#include <sys/types.h>
int initgroups(const char * user , gid_t group );
DESCRIPTION
The initgroups() function initializes the group access list by
reading the group database /etc/group and using all groups of
which user is a member. The additional group group is
also added to the list.
RETURN VALUE
The initgroups() function returns 0 on success, or -1 if an error
occurs.
ERRORS
EPERM
The calling process does not have sufficient privileges.
ENOMEM
Insufficient memory to allocate group information structure.
FILES
/etc/group group database file
CONFORMING TO
SEE ALSO
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